Works fine, I only played a couple of levels though.
(+) no lag when moving to a new screen, amiga music, has save states, passwords are already entered for you
(-) cutscenes and menus run slow, some occaisional minor gameplay slowdown, conrad has a red t-shirt (like the DOS version)

Your other choice is Jenesis 7.4 and the genesis rom
(+) no slowdown, white shirt
(-) 1 sec lag everytime you move to a new screen